The Effect of a DC Magnetic Field on the AC Magnetic Properties of Oleic Acid-Coated Fe3O4 Nanoparticles

M Modestino, A Galluzzi, M Sarno, M Polichetti - Materials, 2023 - mdpi.com
The AC magnetic properties of a sample of Fe3O4 nanoparticles coated with oleic acid have
been investigated with the help of AC susceptibility measurements. In particular, several DC …

High pinning force values of a Fe (Se, Te) Single crystal presenting a second magnetization peak phenomenon

A Galluzzi, K Buchkov, V Tomov, E Nazarova, A Leo… - Materials, 2021 - mdpi.com
The magnetization M of an Fe (Se, Te) single crystal has been measured as a function of
temperature T and dc magnetic field H. The sample properties have been analyzed in the …

Magnetic Vortex Phase Diagram for a Non-Optimized CaKFe4As4 Superconductor Presenting a Wide Vortex Liquid Region and an Ultra-High Upper Critical Field

A Galluzzi, A Leo, A Masi, F Varsano, A Nigro… - Applied Sciences, 2023 - mdpi.com
Featured Application This work concerns the study of the vortex phase diagram in
CaKFe4As4, whose knowledge can be helpful for the understanding of the applicative …

Green-light pn junction particle inhomogeneous phase enhancement of MgB2 smart meta-superconductors

Y Qi, D Chen, Y Li, C Sun, Q Hai, M Shi, H Chen… - Journal of Materials …, 2024 - Springer
Improving the critical temperature (TC), critical magnetic field (HC), and critical current (JC)
of superconducting materials has always been one of the most significant challenges in the …

Investigation of Cr addition effect on structural, morphological, electrical and magnetic properties of Bi (Pb)-2212 superconductors

S Menassel, A Galluzzi, Y Boudjadja… - Journal of Materials …, 2023 - Springer
The main purpose of this research work will assess the effect of Cr addition on the properties
of Bi1. 8Pb0. 4Sr2CaCu2O8+ d superconducting ceramics. The samples are produced from …

Vortex pinning in Au-irradiated crystals from the static limit to gigahertz frequencies

D Torsello, A Galluzzi, S Okayasu, M Fracasso… - Physical Review B, 2024 - APS
Fe (Se, Te) is one of the simplest compounds of iron-based superconductors, but it shows a
variety of vortex pinning phenomena both in thin-film and single-crystal forms. These …

Magnetic and transport anisotropy of electron-doped Nd2-xCexCuO4+ δ with oxygen nonstoichiometric disorder

AS Klepikova, TB Charikova, MR Popov… - Physica E: Low …, 2023 - Elsevier
The mass magnetic susceptibility and resistivity of epitaxial films with different orientations of
the c-axis of electron-doped Nd 2-x Ce x CuO 4+ δ/SrTiO 3 at different cerium concentrations …

Pinning Energy and Evidence of Granularity in the AC Susceptibility of an YBa2Cu3O7-x Superconducting Film

A Galluzzi, A Crisan, AM Ionescu, I Ivan, A Leo… - Applied Sciences, 2024 - mdpi.com
Featured Application This work concerns the study of the granular nature of an YBa2Cu3O7-
x superconducting film, whose expertise can be useful in understanding the temperature …

Mixed state properties analysis in AC magnetic field of strong pinning Fe (Se, Te) single crystal

A Galluzzi, K Buchkov, V Tomov… - Superconductor …, 2020 - iopscience.iop.org
The fundamental harmonic of the AC magnetic susceptibility of a Fe (Se, Te) single crystal
iron based superconductor has been studied at different AC field amplitudes and …

The Depairing Current Density of a Fe (Se, Te) Crystal Evaluated in Presence of Demagnetizing Factors

A Galluzzi, K Buchkov, V Tomov, E Nazarova, A Leo… - Condensed …, 2023 - mdpi.com
The effect of the demagnetizing factor, regarding the determination of the de-pairing current
density J dep, has been studied in the case of a Fe (Se, Te) crystal, using DC magnetic …